{"product_id":"ntk-21045-oxygen-sensor","title":"NTK 21045 Oxygen Sensor - Upstream","description":"\u003ch2\u003eOverview of NTK Direct Fit Oxygen Sensor 21045\u003c\/h2\u003e\u003cp\u003eThe NTK Direct Fit Oxygen Sensor 21045 is engineered for precise emission control in select GM vehicles. Designed specifically for Chevrolet, Oldsmobile, Pontiac, and Saturn models, this heated oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions compliance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor for faster response times\u003c\/li\u003e\n\u003cli\u003eSpecific fit for Chevrolet Alero, Cavalier, Cobalt, and more\u003c\/li\u003e\n\u003cli\u003e9.75-inch wiring harness length for proper installation\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 18mm thread diameter\u003c\/li\u003e\n\u003cli\u003eFour-wire design for reliable signal transmission\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Features and Specifications\u003c\/h2\u003e\u003cp\u003eThis NTK oxygen sensor features a heated sensor type that allows quicker activation and more accurate readings shortly after engine start. The 9.75-inch wiring harness length provides sufficient reach for direct replacement without modification. With a threaded mounting type and an 18mm thread diameter, installation aligns with factory specifications. The four-wire configuration supports both the sensor signal and heater circuit, ensuring consistent operation. This sensor is a specific fit for various GM models including Chevrolet Alero, Cavalier, Classic, Cobalt, Pontiac Grand Am, Sunfire, and Saturn Vue, among others.\u003c\/p\u003e\u003ch2\u003eAbout the NTK Direct Fit Oxygen Sensor Line\u003c\/h2\u003e\u003cp\u003eThe Direct Fit Oxygen Sensor line by NTK is designed to provide exact replacement sensors that match OEM specifications. This product line focuses on delivering sensors that fit directly into the original mounting locations with no need for splicing or modifications. The 21045 part number is part of this line, ensuring compatibility and reliable performance for the specified GM vehicles.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores proper air-fuel ratio readings for engine control modules\u003c\/li\u003e\n\u003cli\u003eHelps resolve check engine light codes related to oxygen sensor failure\u003c\/li\u003e\n\u003cli\u003eImproves fuel efficiency by providing accurate emissions data\u003c\/li\u003e\n\u003cli\u003eReduces harmful exhaust emissions by maintaining sensor accuracy\u003c\/li\u003e\n\u003cli\u003ePrevents drivability issues caused by faulty oxygen sensors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the NTK 21045 oxygen sensor, ensure the engine is cool to avoid burns. Use an oxygen sensor socket or appropriate tool to remove the old sensor carefully. Verify the wiring harness length of 9.75 inches is sufficient for your vehicle’s sensor location. Thread the sensor into the exhaust manifold or pipe by hand initially to avoid cross-threading, then tighten to manufacturer torque specifications. Confirm the four-wire connector is securely attached to maintain heater and signal functions.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNTK oxygen sensors undergo rigorous testing to meet OEM standards for durability and performance. The Direct Fit Oxygen Sensor 21045 is manufactured to provide consistent sensor output and heater operation under normal driving conditions. While specific warranty details are not provided here, NTK products typically include a limited warranty against defects in materials and workmanship.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":43961875726517,"sku":"BFPZ-21045","price":52.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_21045_Fro_7762c7a0-2623-4052-ab93-dac64c3e1295.jpg?v=1775006692","url":"https:\/\/www.partcatalog.com\/products\/ntk-21045-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}